Door-lock.



E. H. GBRIEN.

DOOR LOCK.

APPLIoATIoN FILED man, 191s.

1 1 1 5,332B Panentgisegalcslldi.

29 @62. /2\ n i V' 2` 45 26 gi l g w i l/ l" NZZ 5, l 6/ I 7 22 g 30 B. H. OBRIENf. Doon LOCK.

APPLICATION FILED FEB.17, 1913.

1,115,332. Paten'ed 061211914.

2 SHEETS-SHEET 2.

UNITED sTATns EDMUND HALE OBRIEN, OF KANSAS CITY, MISSOUR.

DOOR-LOCK.

Specification of Letters Patent.

Patented Get. 27, 1914..

Application filed February 17, 1913. Serial No. 748,868,

To all whom t may concern Be it known that I, EDMUND v HALE OBRIEN, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented jcertain new and useful Improvements in Door-Locks, of which the following is a specification. v

This invention relates to door locks, and has for its object to produce a simple and efficient lock which will distribute and therefore minimize, the shocks incident to the forcible closing of the door, and thus reduce chance of injury to the lock and to the finish of parts which receive part of the impact of the door in closing.

A further object is to produce a lock which can be easily unlatched by means of a push button.

To these ends the invention consists in certain novel and peculiar features of construction and organization as hereinafter described and claimed; and in order that it may befully understood reference is to be had to the accompanying drawings, in whichj Figure 1, is a face view of a lock with the face plate omitted and the bolt projected. Fig. 2, is a vertical section on the line jfl- II of Fig. '1. Fig. 3, is a view similar to Fig. 1, with the bolt withdrawn and the tripping` device projected. Fig. 4, is a vdetail plan view 4of the tripping device. Fig. 5, is a view similar to Fig. 1, of a modified form of the lock, and also shows the bolt socket plate. Fig. 6, is a section on the line VI--VI of Fig. 5. Fig. 7, is a view similar to Fig. 5, with the bolt unlocked and the tripping device advanced. Fig. 8, is a per- '.pective view of the bolt socket plate.

ln said drawings, 1 is a lock casing of ordinary form and adapted to be mortised in the edge of a door (not shown), in the usual manner, 2 indicating the removable face plate and 3 the end wall of the casing through'which securing screws (not shown), fasten the casing in place. The wall 3 is provided with an opening l and an opening 5, and fitting in the latter is a reciprocatory bolt-,6, having a longitudinal slot 7 engaging a guide pin 8, proj ecting from the casing and the said bolt is provided in its upper edge with a pair of notches 9 and 10.

1 1 is a bell crank lever arranged in the casing, with one arm projecting forward toward the outer edge of the casing, and the other depending and engaging the notch 9 of the bolt, the first-named arm of the bell crank underlying a shoulder or enlargement 12 of a push-button rod 18, extending through the top wall of the casing and through the door (not shown) to a point where it can readily be depressed, for instance, by an occupant of a motor car having a door equipped with this lock. Preferably the rod 13 has a reduced extension 111 extending past the forwardly-projecting arm of the bell-crank lever, and slidingly through a guide stud l5 on the casing, it being noted in this connection that return or upward movement ofthe push-button is limited by contact of its enlargement 12 with the top wall of the casing. By the arrangement described, it will be apparent that downward movement of the rod 18 eifects the withdrawal of the bolt through the operation of lever 11.

16 is a bell-crank lever in the casing, having a tooth 17, bearing under the pressure of a spring 1S, on the upper edge of the bolt, and adapted under the action of said spring 18 to snap into the notch 10 and lock the bolt in its retracted or unlocked position as shown in Fig. 3, and above its pivotal point the lever 16 is provided with a pin 19 against which pressure is brought to bear to trip the bell-crank lever 16 and permit the bolt to be shot or projected.

20 is a lever arranged in the casing between pin 19 and a pin 21, fixed to the casino' and the lower end of said lever 20 is coiiiected by a retractile spring 22, to the rear end of the bolt, which spring when the door is open as indicated by the positions of the parts in Fig. 3, holds the lever 20 drawn b-ack against the stop pin 21. Above its pivotal point, said lever is recessed at 23, to provide a laterally projecting tooth 241, and accommodate beneath it, the pivoted arm 25 of a reciprocatory tripping device 26 of the latch bolt type, that is to say, a tripping device which is beveled at one end-like an ordinary latch bolt-and will upon encountering an immovable object, such as an ordinary socket plate, be repressed into the `casing against the resistance of a spring 27,

connected at its front end to the fixed part 28 for engagement with the tooth 24 of the lever 20` except when the said pivoted arm is depressed to accommodate downward movement of the push button whereby to effect the withdrawal of the bolt throughk the instrumentality of bell crank 11, and at such time the pivotal movement of lever 25 is merely incidental.

When the door is closed, the parts are in the position shown by Fig. 1, and the tripping device 26 is held repressed within the casing by bearing endwise against the socket plate 29 secured on a door j amb, not shown. In the repression of said device, which occurs as the door closes, lever 2O is swung forward until it strikes pin 19, and thereby rocks lever 16 until its tooth 17 is withdrawn from the notch 10, and as this occurs, the tension on the spring 22 produced by the swinging forward of the lower end of lever 20 explained, results in the shooting or projecting of the bolt into the socket 30 of plate 29. To open the door, downward movement is imparted to rod 13 to depress the spring-elevated arm 25 until the tooth 24 of lever 2G, is above the plane of the front wall of the notch 28, and as this relationof parts is established, the spring 22 contracts and swings the lever 20 rearwardly until it is arrested by stop pin 21. The continued downward movement of the rod 13 through the instrumentality of lever 11, effects the withdrawal of the bolt, and the spring 13 causes lever 16 to lock the bolt in such position. y

rlhe actions described are practically instantaneous and the operator also incidentally applies an outward pressure whereby the door is swung open and at the same time releases the push rod so that the spring 27 simultaneously projects the tripping device 26, and rc'e'levates rod 13. The parts may remain in such position as long as the door stands open, so that when the door is again closed, the bolt will be shot or projected from the casing, as before explained.

Referring now to Sheet 2, 31 is a casing of the customary form except that it is provided with a side opening 32, and a tripping device opening 33, instead of the customary bolt and latch openings. 34 is a reciprocatory rod extending into the casing and through the door, not shown, and adapted to be depressed by applying pressure on its upper end in the same manner as explained in connection with rod 13 of Sheet 1, and rod 34 is provided with an enlargement 35 within the casing, overlying the innerend of the bell crank lever 36, and with a pin 37 overlying the vrear end of a pivoted bolt 38, provided with a notch 39 in its lower edge. The said bolt when locked', engages a notched lug 40, projecting into the casing 31 through opening 32'thereof from an angle shaped socket plate 41, secured to the amb,

not shown, at the front edge ofthe casing,A

the arrangement being such that downward movement of the rod 34 will raise the front end of the bolt from engagement with said lug and leave the door free to be opened when the pressure on rod 34 is removed. Pivoted coincidentally with the `pivoted bolt 38, is a swing arm 42, the same being-heldk yieldingly elevated by a spring 43, inter-r posed between the pivoted bolt and arm 42, and fastened to one of them, and pivotally suspended from the free end of arm 42, is a bar 44, provided with a notch 45, in its rear ledge, and heldpressed rearward Aby a to'rf sion spring 46, mounted on the pivot 47 by .which arm 42 and bar 44 are connected.

Pivoted at 48 inthe casing, is a T-shaped f lever 49, the upper end of its head vnormally engaging with notch 39 and its stem project ing forwardly. The lower end of the head is connected by a'retractile spring 50 to the casing, whereby said lever tends to slide forward through opening 33, the bolt tripping device 51, the same being compelled. to travel in a direct line byits engagement with the j walls of said opening and the engagement of the guide pin 52, with the longitudinal slot f `When the door is closed the lug'40 pror jects through opening 32 into the casing, and the free end of the pivoted bolt engages the notch in said lugs as shown in Fig.k 5, the parts are locked in Ithis position by the power of spring 43. To Yunlatch the bolt, pressure is applied upon rod 34 whereby vlever 36 is operated and trips the notched ybar 44 from engagement with the stem of y lever 49, the ycontinued downward movement of the rod, through ypin 37 raising the free end of the pivoted bolt out of engagement with the notched lug 40 and also disengag` y ing said bolt from the lever 49. The instant lever 3G trips notched bar 44 from engagement with lever 49, spring 43 raises lever 42 slightly and incidentally raises notched-bar 44. After the pivoted bolt is raised and the notched bar 44 is kicked from engagement with lever 49 by lever 36, and as the door is opened, the spring 50 retracts and rocks the lever 49 and advances the tripping devicel to the position which said part occupies inv Fig. 7, where it will bev noted, the frfee end of the stem ofthe lever 49, is the same radial distance as the notch 45, from pivot 47. The spring 46 also swings bar 44 inward or rearward and thereby reverses the operation of lever 36 and relevates the push rod, and effects rengagementbetwe'en notch 45 and the end of the stem of lever 49. As the doory is closed the projecting end oi. the tripping device 5l strikes against the socket plate 4l which contact represses said device and rocks the T-shaped lever 49 back toward its original position; thus pulling bar 44 and arm 42 downward and compressing spring 43. As the lever 49 attains its original position the pressure of spring 43 causes the bolt 38 to drop into notched lug 40 and notch 39 to receive the upper end of the lever 49, which it will be noted has three important functions-to advance the tripping device, eect the compression of locking spring 43, and prevent the same from depressing the bolt to locking position until the tripping device is 'ully repressed as the door is fully closed.

1 claim z- 1. A door lock, comprising a casing, a bolt, means to hold the bolt in unlocked or inoperative position, a spring to throw the bolt to operative position, and means to successively tension the spring and trip said bolt-holding means.

2. A door lock, comprising a casing, a

bolt, means to hold the bolt in unlocked or.. inoperative position, a spring to throw the bolt to operative position, and a slidable tripping device to eiect the tensioning of the spring and the tripping of said boltholding means.

3. A door lock, comprising a casing, a bolt, means to holdthe bolt in unlocked or inoperative position, aspring to throw the bolt to operative position, means to successively tension the spring and trip said bolt-holding means, and manually-operable means to effect the relaxing of the spring.

4. A door lock, comprising a casing, a bolt, means to hold the holt in unlocked or inoperative position, a spring to throw the bolt to operative position, means to successively tension the spring and trip said boltholding means, manually operable means to eiect the relaxing of the spring, and means actuated by the manually operable means for restoring the bolt to inoperative position.

5. A door lock, comprising a casing, a bolt, means to hold the bolt in unlocked or inoperative position, a spring to throw the bolt to operative position, means to successively tension the spring and trip said boltholding means, manually operable means to effect the relaxing of the spring, means actuated by the manually operable means for restoring the bolt to inoperative position, and means whereby the tripping device is restored to its original position when the bolt is thrown to inoperative position.

6. A door lock, comprising a casing, a bolt, yieldingly actuated means engaging the bolt to hold it withdrawn, a spring for operating the bolt, and means to successively tension said spring and trip said holding means.

7. A door lock, comprising a casing, a.

bolt, al spring-actuated pivoted device engaging the bolt to hold it withdrawn, a spring for operating the bolt, and means to successively tension said spring and trip said holding means.

8. A door lock, comprising a casing, a' bolt, means to hold the bolt unlocked, a

lspring to throw the bolt to operative position, a pivoted ydevice attached to said spring, a movable tripping device engaging said pivoted device and adapted through the closing of the door to operate said pivoted device and tension said spring and trip said holding device to permit the bolt to be thrown to operative position, and means to trip said tripping device from engagement with said pivoted device to permit the spring to retract and operate said pivoted device.

9. A door lock, comprising a casing, a bolt, means to hold the bolt unlocked, a spring to throw the bolt to operative position, a pivoted device attached to said spring, a movable tripping device engaging said pivoted device and adapted through the closing of the door to operate said pivc oted device and tension said spring and trip said holding device to permit the bolt to be thrown to operative position, means to trip said tripping device from engagement with said pivoted device to permit the spring to retract and operate said pivoted device, means to withdraw the bolt, and means as the door is opened to restore the tripping device to its original position.

10. In a door lock, a casing, a reciprocatory bolt, a spring-actuated detent to hold the bolt unlocked, a lever, a retractile spring connecting the lever and the bolt to advance the latter, a tripping device provided with a pivoted arm having a shoulder, a spring for holding the tripping device yieldingly projected from the casing and its arm with the shoulder thereof engaging one end of said lever, a lever engagingthe bolt, and a push-rod adapted when operated with the bolt advanced and the tripping device withdrawn to operate the pivoted arm of the latter and free said Erst-named lever and then operate the last-named lever and withdraw the bolt.

11. A lock comprising a bolt, a setting tumbler having yielding connection with the bolt, a latch tumbler adapted for holding the bolt against said yielding connection, and means for first tensioning said yielding connection and then actuating the latch tumbler.

12. A lock comprising a bolt, a tumbler having yieldable connection with said bolt, means for holding said bolt against the yieldable connection, a plunger adapted for actuating said tumbler to tension the yieldable connection, and for actuating said holding means.

13. A lock comprising a bolt, a reoipro- In testimony whereof I ailix my signature catory tumbler having yeldable connection in presen-oe of two Witnesses. with said bolt, means for holding the bolt 7 in drawn position, and means for recipro- DMUND.' HALE O BRIEN' 5 eating said tumbler to tension the yielding Vlitnesses:

means and for actuating the holding means i HELEN C. RoDGERs, for the purpose set forth.v G. Y. THoRPE.

Copies o1' this patent may beobtained for ve cen-ts each, by addressing the Commissioner of Patents, l

Washington, I).v C. 

